just added the BEST mod on my 2015 S550
Also i cheated i did not remove water pump and heater hoses for the install. If you use a dremel you can get in there and cut without removing all the extra bits and draining the engine coolant
Let me know if you get it dynoed. I just had Roush install a SC on my 2016 about a month ago. I love about 25 mins from the Roush factory where they build them. I got a tour of the plant and talked to a few guys there and they said it will be closer to 700hp. It really is scary fast now. I have the PP so I have the 255 tires in the front and 275 in the rear. I ordered new rims from AM and a set of Nitto 555 G2 305s for the rear and gonna put the 275s up front. Maybe then I will turn the TC off lol.
Last edited by caneboy; Aug 16, 2016 at 08:14 AM.
Yes I roll with traction control off all the time with the 305 tires it hooks well if u give it lots of throttle it will brakes loose but I am getting good with my foot skills. The car just launches flawlessly. I took a camaro ss off the line and it felt great destroyed it. Yes the power is scary at first but I am now used to it and it is very addicting I can't stop driving it. I have only got the pedal to half way and it's in boost at warp speed. The power it has and with traction control on the traction control fights it's all the time so try turning it off and you will be in for a real surprise just be light on the gas with your foot
Well my 305s should be in by tomorrow. Does yours feel like the front end gets light at WOT while turned a slight corner? Like when you are getting on a freeway. It pulls so hard it feels like it's lifting the front end a bit.
Yes when I first drove it and laid in the pedal on the gas the front end came up and back end would twist like a wild beast. Here is what I did to stop that. Bought some Steeda IRS subframe braces for the rear and a Steeda extreme G Brace K Brace for the front bolts on under a arms and front subframe. 365 bucks total for for both. Best thing you can do now when I step on it to launch it is tight and in control back end is planted no wheel hop or fish tailing and the front end is more stiffer and hood does not come up as high and feels better in turns as the roush phase 1 makes you cut you k brace up top and you loose the strut bar overhead . Buy the 2 Steeda braces if you are supercharged it is a must to have better control and you will feel the diffrence too


